Note 11 - Variable Interest Entities ("VIE") - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands		Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Cash and cash equivalents		$ 230,062	$ 293,188
Accounts and notes receivable, net		200,121	219,248
Other assets		230,646	233,192
Assets, Total	[1]	11,558,922	11,614,498
Mortgages payable, net		167,976	311,272
Operating lease liabilities		94,492	96,619
Other liabilities		455,560	470,995
Liabilities, Total	[2]	$ 5,770,923	$ 5,928,460
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs		19	19
Variable Interest Entity, Encumbered by Third Party Non-resource Mortgage Debt [Member]
Number of consolidated VIEs		3	3
Variable Interest Entity, Primary Beneficiary [Member]
Number of consolidated VIEs		22	22
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member]
Mortgages payable, net		$ 35,900	$ 36,500
Operating lease liabilities		5,400	5,500
Other liabilities		19,400	20,100
Liabilities, Total		60,700	62,100
Variable Interest Entity, Primary Beneficiary [Member] | Asset Pledged as Collateral [Member]
Real estate, net		96,700	97,700
Cash and cash equivalents		2,200	1,800
Accounts and notes receivable, net		1,400	1,900
Other assets		1,500	1,100
Assets, Total		$ 101,800	$ 102,500

[1] Includes restricted assets of consolidated variable interest entities ("VIEs") at June 30, 2021 and December 31, 2020 of $101,807 and $102,482, respectively. See Footnote 11 of the Notes to Condensed Consolidated Financial Statements.

[2] Includes non-recourse liabilities of consolidated VIEs at June 30, 2021 and December 31, 2020 of $60,723 and $62,076, respectively. See Footnote 11 of the Notes to Condensed Consolidated Financial Statements.